Alkyl-substituted diphenyl ether mixture, lubricating oil, and method for producing alkyl-substituted diphenyl ether
By preparing a mixture of diphenyl ethers without branched alkyl substitution and controlling the composition of straight-chain alkyl diphenyl ethers through a specific process, the problem of balancing high heat resistance and low viscosity in lubricating oils was solved, resulting in a lubricating oil base oil with both high heat resistance and low viscosity.
Patent Information
- Application Number
- CN202480070504.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-06
- Filing Date
- 2024-11-28
- Publication Date
- 2026-05-29
AI Technical Summary
Existing lubricating oils are insufficient in balancing high heat resistance and low viscosity. High heat resistance often leads to increased viscosity, which affects the operating performance of the lubricated parts.
By preparing an alkyl-substituted diphenyl ether mixture, ensuring that the mixture does not contain diphenyl ethers that are only substituted with branched alkyl groups, and mainly composed of diphenyl ethers with straight-chain alkyl groups, a specific alkyl addition process is used to control the number and position of alkyl groups, forming a lubricating oil base that combines high heat resistance and low viscosity.
It achieves a balance between high heat resistance and low viscosity, making it suitable as a base oil for lubricants and reducing the impact of increased viscosity on component operation under high temperature conditions.